Ricoh Gestetner 5428C, Service Manual

Page: 102 / 152

SCANNER UNIT 31 October 2001
6-12
6.3.2 SCANNER DRIVE
A: Scanner motor
↓
B: Timing belt
↓
C: Scanner wire
↓
D: First scanner, E: Second scanner
Full size mode
•
During scanning, the first scanner speed is 20.32 mm/s.
•
The second scanner’s speed is half the first scanner’s speed.
•
Speed increases when the scanner returns.
Reduction/enlargement modes
•
First scanner speed equals the drum rotation speed divided by the magnification
ratio (0.5 to 2.0).
•
Varying the scanner speed changes the sub-scan image size.
Image processing on the MPU changes the main scan image size.
•
The return speed is the same as in full size mode.
C238D051.WMF
[A]
[B]
[C]
[D]
[E]